Cancellation not attended.

On the 11th of March Homechoice delivered,Ashfold Plasma unit and Coffee table,the furniture was essembled i then later realised that the coffee table was way higher than the plasma unit,on monday the 14th of March i called the call center to cancel the coffee table as i was not happy with the height,no feedback was received,i called again a week later,Call Ref ***,to inform them about my intention to cancel the coffee table,today i am behind with my payments since i have refused to pay for the coffee table ,this is affecting my record on ITC,and nothing is being done..i will not pay for something i will not be able to use,if nothing is done by Homechoice i will take the legal route..